64 Keys keypad

[Roshan]

Dear Sir,

Using INKEY command we can use 16 buttons. This will use one 8-bit port. Using 2*8-bit ports we can use 64 buttons. If possiable then pls. add this new command in future. All user of PDS are welcome to leave your valuable comments on this topic.

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Regards

[Tim]

I made a post recently with a basic version of Inkey and it scanning 20 keys you can see the basic system from the code. While it will need a rewrite so you only scan 1 port for the column and 1 port for the row and not combine the 2 aspects into one port, you will find it actually easier.

Do a search for INKEY and TIM

[Roshan]

Hello Tim

I will look your article. Thanks for help.

Regards